Spec Sizes

Honda Civic Si vs Cadillac CT4 Dimensions & Size Comparison

Comparing 2022 vs 2023 catalog dimensions. Honda Civic Si · Cadillac CT4

Same scale for both vehicles. Generic silhouette — proportional to measured length, height, width, wheelbase, and clearance.

Side view
  • Length184.0 in
  • Height55.5 in
  • Wheelbase107.7 in
  • Curb weight2,952 lb – 2,961 lb
Front / width
  • Width70.9 in
  • Cadillac CT4 width71.4 in

Which is bigger?

  • Length: Honda Civic Si is 3.2 in shorter (184.0 in vs 187.2 in)
  • Width: Honda Civic Si is 0.5 in narrower (70.9 in vs 71.4 in)
  • Height: Cadillac CT4 is 0.5 in taller (55.5 in vs 56.0 in)
  • Wheelbase: Cadillac CT4 has a 1.6 in longer wheelbase (107.7 in vs 109.3 in)
  • Curb weight: Cadillac CT4 is 566 lb heavier (2,957 lb vs 3,522 lb)

Biggest size differences

  1. Curb weight: Cadillac CT4 is 566 lb heavier (2,957 lb vs 3,522 lb)
  2. Length: Honda Civic Si is 3.2 in shorter (184.0 in vs 187.2 in)
  3. Wheelbase: Cadillac CT4 has a 1.6 in longer wheelbase (107.7 in vs 109.3 in)
  4. Height: Cadillac CT4 is 0.5 in taller (55.5 in vs 56.0 in)
  5. Width: Honda Civic Si is 0.5 in narrower (70.9 in vs 71.4 in)

Practical verdicts

  • Easier to fit in a short garageHonda Civic Si — Honda Civic Si is shorter by 3.2 in Check garage fit for Honda Civic Si · garage fit for Cadillac CT4
  • Narrower for tight parkingHonda Civic Si — Honda Civic Si is narrower by 0.5 in
  • Smaller exterior footprintHonda Civic Si — Based on length × width (Honda Civic Si)

Dimension comparison

SpecHonda Civic SiCadillac CT4Difference
Length184.0 in187.2 in3.2 in
Width70.9 in71.4 in0.5 in
Height55.5 in56.0 in0.5 in
Wheelbase107.7 in109.3 in1.6 in
Curb weight2,957 lb3,522 lb566 lb

Values use trim midpoints when a model year lists a range.

Compare by year

Overlapping model years with dimension data.

Already own one of these cars?

Jump to maintenance sizes on the vehicle page — tires, wipers, battery, and oil when present in the catalog.